Press.



L YOUNG.

' PRESS.

APPLICATION FILED NOV. 29. ISI-5.

Pante Nwa 13, 191?.

2 SHEETS-SHEET 1A Suomen,

J. YOUNG.

PRESS.

APPLICATlON FILED NOV. 29,1915.

1,246,371. v Patented Nov. 13, 1917.

2 SHEETS-SHEET 2.

gf" mezw UNITED sra'rns Partnr ornron.

JOHN YOUNG, OF CHILLICOTHE, OHIO.

PRESS.

Application filed November 29, 1915.

To all whom t may concern:

Be it known that l, JOHN' YOUNG, a citizen of the United States,residing at Chillicothe, in the county of Ross and State of Ohio, haveinvented certain new and useful Improvements in Presses, of which thefollowing is a specification.

My invention relates to presses of thetype designed for use in obtainingunusuallyv heavy pressures as are used, for instance, in forming watermarks in high lgrade writing paper. In this connection, my inventioncon# templates the provision of-a press structure wherein a plurality ofspeeds may be had for reciprocating the plunger or press head, the firstof these speeds being somewhat rapid and the last very slow, butexceedingly powerful.

In this connection, one of the objects of my invention resides in theprovision of a plurality of screws upon the plunger or press head, thesescrews being operated by and having threaded connection with a suitablegear arrangement. It is valso my object to Provide these screws `withright and left hand threads, each screw carrying a suitable gear and adriving gear arranged to mesh with the gears on each set of right andleft hand screws.

A further object of my invention resides in providing an eXtra weightstructure arranged to come in opposition to the weight of the press headand its actuating mechanism to counterbalance the same. This structureis provided to more readily facilitate the movement of the press headand its com plemental structure from a lowered to an elevated position.

The preferred embodiment of my Vinvention is shown in the accompanyingsheets of drawings, in which similar characters of reference designatecorresponding parts, and in which:

Figure l is a side elevation of my press,

Fig. 2 is an end elevation looking toward the left in Fig. 1,

Fig. 3 is an end elevationflooking toward the right of Fig. 1,

Fig. et is a top plan view of thestructures shown in Figs. 1, 2 and 3,

Fig. 5 is a transverse vertical section taken on line 5 5 of Fig. 1 andlooking in the direction of the arrows,

Fig. 6 is a top plan view ofthe plunger or press head mechanism shownremoved from the remaining structure,

Specification of`Lette1s Patent.

Patented Nov. 13, 191 *7.

Serial No. 63,930.

Fig. 7 is a section of one side of my press and taken on line 7 7 ofFig. 5, and,

Fig. 8 is a section, partially broken away,

taken on line 8-8 of Figat').

1n the drawings, there is shown a generalV framework as comprisingupstanding I- beams 1 forming the endV walls of my press,

vertical -I-beams 1. The vertical and'crossbeams are thenboltedtogether, as shownV at 5, these bolts also passing through theface plates 4, the 'nuts for these bolts bearing against washer platesVshown at 6. The press table is formed of a base plate 7 bolted directlyto the lower cross beams 3, as islshown at 8, while the press head isformed of a plate 9 movable toward and away from the press table 7 aswill be described. By special reference to Fig. 7, it will be noted thatthe inside portions 10 of both upstandingvbeams 1 project slightlybeyondthe face plates 4 to vforin trackways or guideways designed forcoperation with guide members -11 securely bolted to the press head 9,as shown at 12.

This press head is then movable up and' the legs 10 of the beams 1.'This upward' and downward movement is effected mechanically byV theprovision of four vertically extending screws, those marked 18 havingright hand threads, while those marked 14 are provided with left handthreads'for a purpose to'be presently described. These screws areattached to the press head by bolts 15 passing through foot extensions16 at their base portions and are held in true spaced relation at theirupper ends bya plurality of spacing bars designated 29. The press headas a whole, is held in anyposition of adjustment by vmeans of transverseplates 17 and 18, these two plates being bolted together as shown at 19and carrying 'between their adjacent surfaces suitable but spaced fromthe adjacent set of gears. The two spaced sets are located apartdistances permitting a working fit of the right and left hand worms 22and 23 respectively, it being noted that these worms are in mesh withopposite gears of each set and consequently rotation of these worms willimpart rotation to both gears of both sets. These worms are rigidlymounted upon a shaft 24 suitably journaled in the general framework ofthe press and carrying a pinion 25 on one end, this end being toward theleft of F ig. 1. Coperating with this pinion is a complemental gear 26mounted upon a stub shaft 27, this shaft also having rigidly connectedtherewith a hand wheel 28. 0n the opposite end of this shaft 24, thereis loosely mounted a gear wheel having a suitable arrangement ofexternal teeth 36 and a suitable arrangement of concentric internalteeth 37, this latter being shown in Fig. 2.

There is also mounted upon this end of the shaft 24, a spur pinion 38rigidly carrying a hand wheel 39, this pinion being of a size to have aworking t with the internal arrangement of teeth 3T and being furthermounted upon the shaft by means of a keyed connection, thereby beingrigid with respect to the shaft as far as its rotary movement isconcerned, but being slidable thereon longitudinally.

The operation of the device thus far described is as follows: Any rotarymotion given to the shaft 24 by rotation of the hand wheel 39, willcause rotation of the right and left hand worms 22 and 23. Since eachset of worm wheels 20 are in mesh with each other, rotation of one willimpart an opposite rotation to the other and consequently the worm inmesh with this positively rotating worm wheel 20 must have oppositethreads from that of the first named gear. Therefore, to provide adownward movement for opposite rotations of these worm wheels, I haveprovided the right and left hand threaded screws 13 and 14. Also, todivide the pressure and strain more evenly throughout the surface of thepress head, I have provided two sets of worms 20, this latter set beingin mesh with each other and one worm wheel of each set being in meshwith the same worm as shown particularly in Fig. 6. In order to obtainan upward or downward movement by this arrangement, it is necessary thatthe screws on diagonally opposite corners be of the same threadarrangement or, in other words, the two screws on diagonally oppositeVcorners must both be either right hand or left hand. Therefore,rotation of the shaft 24 will cause a rapid up and downward movement ofthe press head as may be desired by means of the worm wheels and theirscrew connections.

In order that the amount of power required to move the press head up,will be about the same as that required to move it down under nocondition of load, I have provided a counterweight structure designed tocounterbalance the effective weight of the press head and its actuatingmechanism. This counterbalance structure takes the form of twocounterbalance weights designated 30 and slidable up and down in thechannel formed between the leg portions 10 of the end beams 1. To theupper ends of these counterweights, there are attached by means of theI-bolts 31, cables 32, these latter passing upwardly and over sheaves 33suitably journaled in bearing members 34, these latter being located onthe I-beams 1, at a height slightly above the uppermost position of thepress head itself. The opposite ends of these cables are shown as 'beingattached at 35 to the upper edges of the press table y itself and bythis arrangement, these counterweights act in opposition to the normalweight of the press table and its actuating mechanism.

In order to obtain a second and slower speed and consequently a greaterpressure between the press table and press head by the same amount ofapplied power, I resort to the use of the hand wheel 28. Rotation ofthis hand wheel 28 imparts rotation to the gear wheel 26 and this latterimparts rotation to the shaft 24 by means of the pinion 25. The rotationcaused by this last connection will, however, be slower because of thegear reduction between the gears 25 and 26.

To give a third reduction in speed, I have mounted on the stub shaft 40a combined spur pinion and worm wheel 41 so located that it will meshwith the external teeth on the gear 36 and also with the worm shown at42. This worm is mounted upon a shaft 43 carrying a hand wheel 44 at itsouter eX- tremity. Rotation of this last named hand wheel 44 will impartrotation to the worm wheel 42 and from there to the shaft 24 carryingthe right and left hand worms 22 and 23 by means of the gear connectionsmade by the combined spur pinion and worm wheel 41 and the gear wheel36. In order to lock this gear wheel 36 to the shaft 24, it is necessarythat the pinion 38 and hand wheel 39 be moved to an innermost positionin which the teeth on the pinion 38 engage the internal arrangement ofteeth 37.

It will thus be apparent that I have provided a press in which a greatamount of pressing power can be obtained by a simple manual operation.The arrangement of the screws 13 and 14 is such that the pressure Vwillbe evenly divided over the surface of the press head and the weight ofthis press head will be counterbalanced by means of the counterweightstructure 30.

Vilhat I claim, is:

1. In a press, a general framework whose ends are formed of verticallyarranged I- beams, a stationary press table, a movable press head guidedin its up and down movement by the legs of said I-beams, and acounterweight structure slidable up and down in the channel space formedbetween said Lbeams and said press table.

2. In a press, a general framework, a press table, a press head, aplurality of upstanding screws attached to said press head, a gear oneach of said screws having threaded connection therewith and supportedfrom said framework, a transverse shaft carried by said framework, wormson said shaft ar- Gopies of this patent may be obtained for ve ranged tomesh with said gears, a hand wheel directly keyed to said shaft, apinion on the opposite end of Said shaft, a second gear meshing withsaid last named pinion, a hand wheel whereby said last named gear may beoperated, a second pinion on said shaft, and a worm and worm wheel drivemeshing with said last named gear.

In testimony whereof I aiiiX my signature in presence of two witnesses.

JOHN YOUNG. Witnesses WALTER E. L. BOOK, A. L. PHELPS.

cents each, by addressing the Commissioner of Patents, y

Washington, D. C.

